The Super Snap reusable grommet adds additional tie-down areas, replaces ripped-out grommets and extends the life of a tarp. To use, place the Super Snap's disc underneath the plastic or fabric tarp, start one side of the loop on the disc groove, then push the loop into place. The snap clamps the material in place for a no-slip grip, and a hook-eyelet at one end allows the user to attach a bungee cord, rope, etc. A package of four is $2.99.